i bought this game, because it looked like fun. i have seen so much gameplay here on GB.com. unfortunately the game can run only on 60fps(max). when your FPS drops to 50-55FPS(even for 0.5sec) it has weird shuttering or slowdown. im very sensitive to things like this. worse is that redlynx will not even comment on this problem(i guess its core problem that cannot be fixed) even when there are many topics about this problem.
also, multiplayer is still not working(it was possibly fixed today - again). the issues were so annoying that i had to request refund(first time in my life) and thankfully steam refunded me just now.
long story short, think twice about this purchase. my pc is c2q with radeon hd6950 and i had slowdown/shutter problem, because sometimes my FPS drops under (max) 60fps.
edit: of course(and unfortunately) turning vsync off was first thing i have done and it did not help at all. i was stupid enough and bought this game without checking forums. because this problem was reported since first beta and it was all over steam/redlynx forum.
edit2: game is using Uplay. if you start the game in steam, only uplay client is started. you need to press play there. i had some minor problems, when uplay didnt recognize that i own this game and i was not able to start the game. i had to restart uplay several times.